System.util.zlib.Deflate.set_data_type C# (CSharp) Method

        internal void set_data_type(){
            int n = 0;
            int  ascii_freq = 0;
            int  bin_freq = 0;
            while(n<7){ bin_freq += dyn_ltree[n*2]; n++;}
            while(n<128){ ascii_freq += dyn_ltree[n*2]; n++;}
            while(n<LITERALS){ bin_freq += dyn_ltree[n*2]; n++;}
            data_type=(byte)(bin_freq > (ascii_freq >> 2) ? Z_BINARY : Z_ASCII);
        }